tree 4be97c0507611d900385959665b28502447ae2f8
parent 5ea077f13eb0497039ba64903c2927979efd955f
author Jermy Li <lizhangmei@baidu.com> 1559032843 -0500
committer zhoney <zhangyi51@baidu.com> 1559032843 +0800

let subclass of ConfigOption be able to override parent options (#24)

also implement ConfigOption.toString()

Change-Id: I1f1fd5eeaa80252fc093e7cba5af525a32a23c99